Appendix
A.1 Technical data
SITRANS TF280 WirelessHART
Operating Instructions, 10/2010, A5E02619566-02
87
A.1.7
Communication
Technical specifications
Communication
Wireless standard
In conformance with wireless HART V7.1
Transmitter frequency band
2.4 GHz (ISM)
Transmission range
Outdoors
Up to 250 m (visual connection)
Indoors
Up to 50 m (depends on hindrances)
Interface
Wireless HART maintenance port:
Input/output for HART communication with HART
modem
Antenna (wireless HART)
A.1.8
Power supply
Technical specifications
Power supply
Battery
Lithium thionyl D-cell
Battery voltage
3.6 V DC
Max. current (I
max
)
100 mA
Battery life
Up to 5 years with optimum conditions of use and activation
of all energy-saving functions
A.1.9
Certificates and approvals
Technical specifications
Device safety
IT standard IEC / EN 60950-1:2006
Radio module FCC ID
SJC-M2140
Explosion protection
-